Improvement in bolt and rod cutters



l. G. HIRZEL.y

Bult andv Rod-Cutters.

Patented March 24,1874.

UNITED S JOHN GEORGE HIRZEL, OF VILMINGTO, DELAWARE.

IMPROVEMENT EN BGLT AND RD CTTERS.

Speciication forming part of Letters Patent No. 1455,95@ dated lilarch24,1874; application filed November l, 1873.

To all whom t may concern:

Beit known that I, J oHN GEORGE HrnznL, of the city of Vilmington, inthe county of New Castle and State of Delaware, have invented a new andvaluable Improvement in Bolt-Cutters; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawingsmaking a part of this specification, and to the letters and gures ofreference marked thereon.

Figure 1 of the drawings is a representation of a plan view of mybolt-cutter. Fig. 2 is a horizontal section of the same. Fig. 3 is avertical longitudinal section of the same.

This invention has relation to portable hand bolt-cutters; and itconsists in the construetion and arrangement of the parts as will behereinafter more fully described and claimed.

The following is a description of my improved cutter.

The stock or frame ot' the cutter is composed of two plates, A A',secured together by bolts and nuts, and slotted, as shown iu thedrawings. B represents a V-shaped cutter-plate, which is constructedwith parallel sides, and with a beveled cuttingedge, b. Thiscutter-plate is rigidly secured between the contracted ends of thestock-plates A A, by means of bolts and nuts bi, and when so secured itsbottom side is flush with the bottom of the plate A. C represents areciprocating cutter, which is adjusted between the inner parallel edgesof the cutter -plate B, and fitted thereto, as shown by the sectionalview, Iiig. 4. 4The bottom ot' this cutter C is tlush with the bottom ofthe frame B, for the purpose of allowing the end of a bolt or' rivet tobe cut close to the surface of the object through which it passes. Grepresents an elliptical yoke, which is applied between the enlargedportions ofthe plates A A', and constructed with a centra-lconnecting-bridge, g, through which a screw, E, is tapped. This screw isreceived loosely into a recess made in the rear end of the cutter C, andis attached to this cutter byk means of a pin or screw, t, entering anannular groove in the screw, or by any other suitable means. D Ddesignate two lever-handles, having cams or eccentrics e e formed ontheir ends, which are received between the plates A A and into the yokeG on opposite sides of the connecting bridge of this yoke. Theselever-handles D D are connected to plates A A by pivots c' t', and theyare constructed with stop pins, a rigid tongue, d, and an adjustablescrew or abutment, d.

By opening and closing the handles D D the yoke G and the cutter Oreceive a reciprocating motion.

The screw E allows the cutter O to be adjusted so that the. handles D Dwhen closed, as shown in the drawings, will just bring the cutting-edgeof this cutter up to the cuttingedge b, which condition of things can bemaintained however much ofthe cutter C be ground away. By removing thebolts and nuts and the pin or screw t the two cutters can be detachedfrom their stock and sharpened.

It will be seen from the above description that the cutter O can bemoved with considerable force, that it can be readily adjusted forwearing away ot' its edge by grinding, and

Vthat a very close and clean cut can be made by it and the cutter bacting on both sides ot' a bolt or rivet at one time.

The studs j j abut against the edges of an extension, a, of plate A,before the handles D D are brought too close, and the screw d allows thehandles to be adjusted as above described, to prevent injury to thecutting-edges when they are brought quickly together.

I'Vhat I claim as new, and desire to secure by Letters Patent, is-

1. The elliptical yoke G, constructed with the central connecting-bridgeg, in combination with the adjusting-screw E and cutter O, as specified.

2. The yoke G, receiving through it the screw E, for adjusting thecutter C, in combination with the lever-handles D D, eccentrics e ethereon, and the plates A A forming the stock of the tool, as and forthe purposes set' forth.

In testimony that I claim the above I have hereunto subscribed my namein the presence l of two witnesses.

JOHN GEORGE HIRZEL.

lVitnesses:

' tTimms McCann,

VASHINGTON MASON.

